Foundation paid out all of its cash and accepted no further donations thus terminating the trust. Trustee timely filed final paper Form 990-PF with the IRS as had been done in each prior year. See attached. IRS sent back the return and the postage paid envelopment because had not been filed electronically. Trustee did not realize it was now mandatory to file electronically even for this final return where the Foundation had no money to pay electronic filing fee. Trustee is now submitting same information electronically and paying the electronic filing fee.